随着材料科学的飞速发展,人们不仅意识到金属中微量元素对其性能有明显的影响,而且也开始注意到金属液体的表面张力与冶金材质有着密切的关系。孕育铸铁与铸铁件针孔众所周知,铁水的孕育处理,对铸铁的机械性能影响很大,所以目前国内外仍在大力研究孕育技术。在孕育铸铁发展中存在的问题之一是,孕育处理后的铁水,浇注的铸件易产生针孔。对于它的成因人们进行 With the rapid development of material science, people not only realize that trace elements in metal have obvious influence on their properties, but also begin to notice that the surface tension of metal liquid is closely related to metallurgy materials. Born cast iron and cast iron pinhole As we all know, hot metal breeding process, a great influence on the mechanical properties of cast iron, so at home and abroad are still vigorously studying inoculation technology. In the development of cast iron in the development of one of the problems is that after the treatment of hot metal, casting castings easy to produce pinholes. For its cause people are going